According to Sundar Pichai on Twitter, Coinbase has extended its x402 protocol to AP2, a move that highlights the growing trend of open standards for building robust AI agent ecosystems (source: Sundar Pichai, Twitter, Sep 16, 2025). This development enables greater interoperability between AI agents, making it easier for developers and businesses to deploy intelligent automation across platforms. The expansion of x402 to AP2 is expected to accelerate innovation in AI-powered financial services and drive new business opportunities for enterprise integration and secure transactions.